1974 United States Assay Commission Medal. By Pierre Simon DuVivier and Frank Gasparro. JK AC-118, Baker C-348. Rarity-7. Pewter. MS-62 (NGC).57 mm. A second example of this scarce and popular Assay Commission issue, with light handling and slight muting to the finish explaining the lower Mint State grade.From Presidential Coin & Antique Co., Inc.s Robert Marcus Collection sale, December 2001 Auction Seventy, lot 621. Lot tag and collector tag with attribution and provenance notes included.